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LMX4168 数据表(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部件名 LMX4168
功能描述  Radio Transceiver for DECT
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制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 NSC - National Semiconductor (TI)

LMX4168 数据表(HTML) 1 Page - National Semiconductor (TI)

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© 2004 National Semiconductor Corporation
www.national.com
ADVANCED INFORMATION
March 2004
LMX4168
Radio Transceiver for DECT
1.0 General description
The LMX4168 is a radio transceiver integrated circuit opti-
mized for the Digital Enhanced Cordless Telecommunica-
tions (DECT) system. The transceiver, when combined with
a power amplifier and a Tx/Rx switch, implements a com-
plete DECT radio transceiver compliant with the ETSI
CTR6 standard. The LMX4168 interfaces to National Semi-
conductor’s SC144XX DECT family of baseband proces-
sors.
The LMX4168 integrates a complete transmitter, consisting
of a phase locked loop, VCO and PA driver. The receiver
contains LNA, quadrature downconverter, polyphase fil-
ter/combiner, automatic gain control, and demodulator.
The LMX4168 operates from a single 2.25–2.75V supply.
The LMX4168 is manufactured in National’s 0.25
µm
CMOS technology, and is packaged in a 44 pin LLP pack-
age
2.0 Features
■ Highly integrated 1.9 GHz low-IF CMOS transceiver
■ Down conversion to half the DECT channel spacing (864
kHz)
■ On-chip channel select filter
■ On-chip Voltage Controlled Oscillator (VCO)
■ On-chip low noise amplifier (LNA)
■ Open-loop modulation
■ On-chip timing control
■ Four digital (5 mA) output ports
■ 0 dBm PA driver output
■ -95 dBm sensitivity
■ 2.5V operation
■ Small 44 pin Leadless Leadframe Package
3.0 Applications
■ (DECT) Digital Enhanced Cordless Telecommunications
4.0 System Diagram
TXDATA
RX_DATA
RSSI
DATA
CLOCK
LE
AGC
DEMOD.
90°
DEMOD.
PA
BIAS
X2
PLL
PADR
MICROWIRE
LNA
BALUN
BALUN
PORTS
R REF


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